I. Objective:
To define the types of electric service available from PEC.
II. Policy Content:
To list the various types of electric circuits available and their characteristics.
III. Provision:
A. Types of Electric Service
The type of electric service which will be furnished to the member will depend on the location, size and type of load to be served. It is recommended that the member obtain from PEC the phase and voltage of the service that will be furnished before proceeding with the purchase of motors or other equipment. Also, the point of delivery on the premises served must be determined before the member’s wiring installation is made.
PEC renders 60 hertz (Hz) service from circuits of the following characteristics:
- Nominal Service Voltage - Type of Service
- 120VAC: Single Phase, 2 wire*
- 120/240VAC: Single Phase, 3 wire
- 240/480VAC: Single Phase, 3 wire
- 120/208VAC: Three Phase, 4 wire wye
- 120/240VAC: Three Phase, 4 wire delta
- 240/480VAC: Three Phase, 4 wire delta
- 277/480VAC: Three Phase, 4 wire wye
- 2400/4160VAC: Three Phase, 4 wire wye
- 7200/12470VAC: Three Phase, 4 wire wye
- 14400/24940VAC: Three Phase, 4 wire wye
*No longer provided for new services.
The preceding voltages are standard types of service supplied by PEC, where available, and when all contract terms and conditions of service have been agreed to by the member and PEC.
B. Other Types of Electric Service
The member may request and at PEC discretion receive service at a voltage other than those listed in III. A. when available and at the option of PEC.
If a special voltage is required by the member and PEC chooses not to make such voltage available, it shall be the member’s responsibility to install his/her own equipment at his/her expense which will transform the provided service voltage to the required level. Any such equipment installed must meet the approval of the Cooperative prior to being placed in service.
C. Motor Starting Requirements
Motors may be started across-the-line if the starting requirement does not exceed 50 kVA for single-phase service and 150 kVA for three-phase service. Groups of motors starting simultaneously shall be classed as one motor.
Across-the-line motor starting requirements larger than those shown above may be permitted in certain circumstances. If requested by member, PEC will perform studies to determine the maximum starting capacity for each specific installation.
If the starting of a motor or group of motors should have a disturbing influence on service to other members, PEC shall reserve the right to require the member to install suitable equipment, at his/her own expense, that will reduce the disturbing effect to levels or limits acceptable to PEC.
D. Low Power Factor Equipment
Should the member install any electrical device or devices creating a low power factor, PEC may require the member to provide at his/her own expense power factor corrective equipment which will maintain the power factor of each such device at not less than ninety percent (90%).
E. Harmonic Distortion
Where equipment is operated in such a manner that the harmonic distortion has a disturbing influence on the service to other members, PEC shall reserve the right to require the member to install suitable equipment, at his/her own expense, that will isolate or reduce the disturbing effect to levels or limits acceptable to PEC.
IV. Responsibility
It will be the responsibility of the Sr. Manager of Engineering & Power Delivery, Director of New Construction, and Director of Construction Engineering to properly administer these provisions.
Approved by the Board of Trustees
- Effective Date: January 1, 1994
- Revised Date: August 28, 2009
- Revised Date: June 25, 2020